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Unix SMB/CIFS implementation.
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Password and authentication handling
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Copyright (C) Andrew Bartlett 2001
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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#define DBGC_CLASS DBGC_AUTH
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* update the encrypted smbpasswd file from the plaintext username and password
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* this ugly hack needs to die, but not quite yet, I think people still use it...
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static bool update_smbpassword_file(const char *user, const char *password)
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if ( !(sampass = samu_new( NULL )) ) {
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ret = pdb_getsampwnam(sampass, user);
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DEBUG(0,("pdb_getsampwnam returned NULL\n"));
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* Remove the account disabled flag - we are updating the
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* users password from a login.
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if (!pdb_set_acct_ctrl(sampass, pdb_get_acct_ctrl(sampass) & ~ACB_DISABLED, PDB_CHANGED)) {
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if (!pdb_set_plaintext_passwd (sampass, password)) {
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/* Now write it into the file. */
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ret = NT_STATUS_IS_OK(pdb_update_sam_account (sampass));
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DEBUG(3,("pdb_update_sam_account returned %d\n",ret));
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/** Check a plaintext username/password
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* Cannot deal with an encrupted password in any manner whatsoever,
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* unless the account has a null password.
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static NTSTATUS check_unix_security(const struct auth_context *auth_context,
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void *my_private_data,
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const auth_usersupplied_info *user_info,
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auth_serversupplied_info **server_info)
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struct passwd *pass = NULL;
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pass = Get_Pwnam_alloc(talloc_tos(), user_info->internal_username);
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/** @todo This call assumes a ASCII password, no charset transformation is
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done. We may need to revisit this **/
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nt_status = pass_check(pass,
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pass ? pass->pw_name : user_info->internal_username,
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(char *)user_info->plaintext_password.data,
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user_info->plaintext_password.length-1,
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lp_update_encrypted() ?
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update_smbpassword_file : NULL,
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if (NT_STATUS_IS_OK(nt_status)) {
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/* if a real user check pam account restrictions */
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/* only really perfomed if "obey pam restriction" is true */
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nt_status = smb_pam_accountcheck(pass->pw_name);
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if ( !NT_STATUS_IS_OK(nt_status)) {
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DEBUG(1, ("PAM account restriction prevents user login\n"));
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make_server_info_pw(server_info, pass->pw_name, pass);
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/* we need to do somthing more useful here */
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nt_status = NT_STATUS_NO_SUCH_USER;
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/* module initialisation */
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static NTSTATUS auth_init_unix(struct auth_context *auth_context, const char* param, auth_methods **auth_method)
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if (!make_auth_methods(auth_context, auth_method)) {
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return NT_STATUS_NO_MEMORY;
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(*auth_method)->name = "unix";
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(*auth_method)->auth = check_unix_security;
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NTSTATUS auth_unix_init(void)
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return smb_register_auth(AUTH_INTERFACE_VERSION, "unix", auth_init_unix);